Short-process flexible drill rod producing equipment and process

Abstract

The invention relates to short-process flexible drill rod producing equipment which is characterized in that a loading rack is connected with a pipe end processing machine tool through a roll type conveying chain, the back end of the pipe end processing machine tool is provided with a friction welding machine tool, the back end of the friction welding machine tool is provided with a weld joint heat-treatment device, the weld joint heat-treatment device is connected with a weld joint finishing machine tool through a conveying device, the back end of the weld joint finishing machine tool is provided with an iron scrap sucking device, and the back end of the iron scrap sucking device is provided with a plurality of verifying devices. In the invention, off-line treatment is carried out on the working procedures of thickening, upsetting, tempering and straightening pipe ends, and then outsourcing or flexible configuration can be carried out according to own objective conditions. The short-process flexible drill rod producing equipment improves the pretreatment level and precision before friction welding to lay the foundation for ensuring the quality of the friction welding; the quantity of steel pipes with primary weld joint annealing is increased so that the equipment improves the product beat and eliminates the bottleneck of a production line; the equipment improves the finish turning precision of weld joints to provide favorable conditions for pressure tests and weld joint comprehensive verifications, and simultaneously improves the appearance quality of the steel pipes; and the equipment configuration is improved by adopting a comprehensive verifying zone.

Description

technical field [0001] The invention relates to a short-flow flexible drill pipe production equipment and its production process, specifically the drill pipe production process invented to make up for the shortcomings of the current drill pipe line production process, which meets the production of drill pipe lines, API product certification and API system certified. It can be used to process new drill pipes of production enterprises, especially suitable for the production of high-standard steel grades (E75, X95, G105, S135). Background technique [0002] At present, with the increasing demand for oil in the global market, the market has continuously put forward new requirements for the quality and application range of drill pipes, and the production of high-quality, high value-added products has also grown rapidly. The capacity requirements for steel pipe processing equipment are also getting higher and higher. On the other hand, API (American Petroleum Institute) standard...

AI Technical Summary

Problems solved by technology

[0005] At present, the pretreatment before friction welding is generally processed by manual grinding or simple machine tools. The surface quality of the welding surface is poorly controllable, which directly affects the quality of subsequent friction welding.

The cooling method of welding seam heat treatment is traditionally compressed air cooling, generally using a single manual treatment, which has low efficiency, slow process beat, and unstable heat treatment quality

The internal and external welds after heat treatment are traditionally processed by manual grinding, the dimensional control accuracy is poor, the quality of the internal and external surfaces is unstable, and there are iron filings near the welds, which poses a quality hazard to subsequent inspections

The pressure test and weld inspection are generally applicable to the old version of the API standard. With the revision of the API standard and the change of market requirements, the equipment cannot meet the new requirements in terms of capability.

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